Finding the Fourth Proportional to 10,498.47, 14,487.92 and 5,718.45

Step by Step Solution

1. Step 1: Write the proportion equation
   10,498.47 : 14,487.92 = 5,718.45 : x
2. Step 2: Convert to fraction form
   10,498.47/14,487.92 = 5,718.45/x
3. Step 3: Cross multiply
   10,498.47x = 14,487.92 × 5,718.45
4. Step 4: Simplify right side
   10,498.47x = 82,848,446.12
5. Step 5: Solve for x
   x = 82,848,446.12/10,498.47
6. Step 6: Final answer
   x = 7,891.48